Box making machine



April 5, 1938.

C. KEMP I BOX MAKING MACHINE I Filed Nov. so, 1936 2 sheets-sheet 1ATTORNEY 45.

April 5 1938. c. KEMP BOX MAKING MACHINE Filed Nov.'50, 1936 2Sheets-Sheet 2 ATTORNEY 45.

Patented Apr. 5, 1938 BOX MAKING MACHINE Clayton Kemp, Merchantville, N.J., assignor, by mesne assignments, to Kleekhefer Container Company,Delair, N. J., a corporation of Delaware Application November 30, 1936,Serial No. 113,338

19 Claims.

This invention relates to improvements in box making machines.

The invention relates more particularly to that class of machine whichis capable of effecting continuous and automatic production of knockdownfiber or corrugated board containers, and the invention contemplates theuse of mechanism for feeding blanks from a hopper to a folding machine,for conveying the folded blanks from the latter to a stitching machine,and for discharging the completed knock-down boxes from said stitchingmachine. The invention may be used in connection with apparatus whereinthe blanks in the hopper are completely scored and slotted, or theblanks may still require scoring and slotting operations. In this lattercase, suitable scoring and slotting mechanism may be interposed betweenthe feed hopper and the folding unit.

The folding mechanism usually employed embodies oscillatory folding armsengageable with opposite side portions of the blank while the latter isin motion to fold said side portions into proper position for thestitching operation. Due to the fact that the blanks are moved while thefolding is being performed, there is necessarily a limit to the speed atwhich the blanks can be conveyed through the folding machine. Thestitching mechanism shown herein necessitates momentarily arresting themoving blank, and driving metallic staples through the overlapped,folded portions of the blank before the blank is again freed by thearresting mechanism. The stitching operation may also include thesquaring of the folded blank before the staples are driven as set forthin Walker and Werner Patent No. 1,874,671, dated August 30, 1932. Thestitching operation on the machine shown. herein therefore requires aperiod of complete arrestation of the folded blank, and it hasheretofore not been possible to obtain proper results in both thefolding unit and the stitching unit without sacrificing speed ofproduction.

It is therefore an object of the present invention to provide animproved box making machine as above described whereih materiallyincreased production is obtained without causing the blanks to move toorapidly through the folding machine and without limiting the requiredperiod of arrestation of the folded blank in the stitching machine.

A more specific object of the invention is to provide a box makingmachine as above described wherein the speed of the moving blank in thefolding machine is less than the speed of the blank after the foldinghas been performed, and wherein the time gained by the increased speedafter the blank has been folded is utilized in a novel way to afford asuitable amount of time for the period of arrestation in the stitchingmachine.

With the above and other objects in view, the invention consists of theimproved box making machine and all its parts and combinations as setforth in the claims and all equivalents there- In the accompanyingdrawings illustrating one complete embodiment of the preferred form ofthe invention in which the same reference numerals designate the sameparts in all of the views:

Fig. 1 is a perspective view of the improved box making machine, certainframe portions being omitted and others being shown by dot-anddash linesso that the essential mechanism is not hidden;

Fig. 2 is a plan view of a portion of the device I showing a blank inposition on the folding machine conveyor;

Fig. 3 isa sectional view taken on line 33 of Fig; 2, the dotted linesshowing how the folding of the blank is accomplished; I

Fig. 4 is a side elevational view of the stitching mechanism, partsbeing broke n away and shown in vertical section; f

Fig. 5 is a sectional view taken on line 55 of Fig. 4; and

Fig. 6 is a side elevational view of the three conveyors alone, showinghow they cooperate with the moving blanks. 5

v Referring first more particularly to Fig. l, the numeral liidesignates a stack of container blanks positioned between guides II on asuitable table If. A bar l3, which may reciprocate in a well knownmanner, in timed relationship with the conveyors on the box makingmachine, is adapted to feed blanks from the bottom of the stack Iiibetween slotting rollers I4. The blanks have been previously scoredalong the lines l5 and I6 but must still be slotted at I! and scored atI8. The rollers It may be of standard construction and provided withknives or other instrumentalities IQ for performing the slotting at H.The rollers II are mounted rigidly on shafts 20 and II, and said shaftshave meshing gears 22 and 23 mounted on an end thereof.

After the blanks have passed through the slotting mechanism they areengaged by the rolls 24 which perform scoring along the lines It, andwhich rolls may be constructed in any well known shafts 32 and 33.

manner to accomplish the desired purpose. The rolls are rigidly mountedon shafts 25 and 26, which shafts have meshing gears 21 and 28 mountedon end portions thereof. A pinion 29 may connect the gear 22 with thegear 21.

It is not essential that the slotting and scoring mechanism be employed,as the blanks in the stack l9 may have been previously completelyslotted and scored on separate mechanism.

After an advancing blank leaves the scoring mechanism 24, it passesbetween pull rollers 39 and 3|. The rollers- 39 are preferably smallerthan the rollers 3 I and it is preferred to have the rollers 39 of adiameter approximately 7.962" and to have the lower rollers 3| of adiameter approxi mately 11.445". By having these rollers approximatelythe size stated, the rollers 39 being slightly oversize, with respect tostandard practice, there is a slight momentary increase in line speed toprevent the blank from stumbling.

The rollers 39 are mounted on a shaft 32 and the rollers 3| are mountedon a shaft 33. Gears 34 and 35 are mounted on adjacent ends of said Thegear 35 meshes with the gear 34, and the gear 34 is connected with thegear 39 through an intermediate pinion 36. Any one of said gears may bedriven by a motor (not shown) to drive the train of gears. The shaft 32is further connected by means of an endless chain or belt with anoverhead shaft 31, which shaft extends into a gear box 38 to drive alongitudinally extending overhead shaft 39. The shaft 39 is the driveshaft for the stitching mechanism, as will be hereinafter explained, andas a result the entire machine has inter-related driving mechanism.

As soon as the trailing edge of an advancing blank leaves the nip of thepull rolls 39 and 3|, the blank is picked up by one of the sets offlights 49 on conveyor chains 4| (see Figs. 2 and 3) and conveyed oversupporting rails or the like 42 and beneath folding irons 43. Theconveyor chains 4| are driven by sprockets 44 mounted rigidly on thepull roll shaft 33, and said sprockets are of less diameter than thepull rolls 3|, being preferably 10.838 in diameter. The conveyor chains4| also pass around sprockets 45 mounted on a shaft 46.

The container blanks for which the machine illustrated is particularlyadapted are 24" in width, that is they are 24" long in the direction inwhich they are being fed, and for blanks of this width the flights 49 onthe conveyor chains 4| are preferably 34 apart, there being but two setsof flights on the conveyor chains 4| as shown in Fig. 6.

Bevel gears 41 rigidly secured to the shaft 33 drive bevel gears 48rigidly secured to the ends of shafts 49, and the shafts 49 extendthrough openings 59 in rack members 5|? (see Fig. 3). Within theopenings 59 of the rack members the shafts 49 are provided witheccentrics 52, which eccentrics when rotated cause the rack members tooscillate on pivots 53. As the rack members oscillate' they impartsimilar motion to pinions 54 mounted on folding arm shafts 55, and saidshafts carry folding arms 56 which move from the full line position ofFig. 3 to the dotted line position therein to fold the portions 51 and58 of the blank into suitable position for stitching purposes- Thereforeas the blank is being moved by the flights 49 of the conveyor chains 4I, it is engaged by the oscillatory folding arms 56 and folded to thedotted line position of Fig. 3 while in motion.

The folded blank is then discharged by the conveyor flights 49 to aposition between guide rails 59 over an intermediate conveyor comprisingspaced chains 69 (see Fig. 2). The conveyor chains 69 travel onsprockets 6| and 62, and said intermediate conveyor has two sets offlights 63 and 64. For the particular machine being described, thesesets of flights are spaced apart a distance of 48"; whereas the flightson the folding machine conveyor are spaced apart 34". The sprocketwheels 6| and 62 are larger in size than the sprocket wheels 45 so thatthe flights 63 or 64 will travel the complete circuit of theintermediate conveyor in the same length of time as it takes the flights49 on the conveyor chains 4| to travel the complete circuit. Thus themoment one of the sets of conveyor flights 49 on the conveying chains 4|leaves the trailing edge of one of the blanks, said trailing edge ispicked up by one of the sets of flights 63 or 64 of the conveyor chain69. To accomplish this purpose of increasing the lineal speed of theconveyor chains 69 proportionately to the difference in flight spacingbetween the conveyors 4| and 69, the sprocket wheels 6| must have such adiameter with respect to the sprocket wheels 45 as to cause the conveyorchain 69 to travel at a lineal speed 48/34 greater than the lineal speedof the conveyor chains 4|.

A third set of conveyor chains 65 operates in conjunction with thestitching mechanism around sprocket wheels 66, 61 and 68, and the chains65 are provided with three sets of flights 69, 19 and 1|, which sets offlights are spaced 48" apart.

Cam members 12 mounted rigidly on the drive shaft 39 (see Fig. 4) areformed with cam grooves 13 cooperable with rollers 14 to causereciprocation of a plurality of stitching arms 14'. Said cam members andstitching arms are of standard construction and are therefore not beingdescribed in detail. These stitching arms are adapted to be fed withwire from spools (not shown) and are capable of stitching the overlappedportions of the blank together in a well-known manner.

The stitcher drive shaft 39 is journaled through the upper portions ofmembers 15 and 16, which members are formed with slots 11 and 18respectively. Slidably mounted in the slot 18 is a bar 19 carrying asheet stopping or arresting plate 89 on its lower end. The upper end ofthe bar 19 has a pin projecting therefrom, which pin carries a roller 8|cooperable with a groove 82 in a cam member 83, which cam is rigidlymounted on the shaft 39. As a result of this construction, when theshaft 39 is rotated, the bar 19 is reciprocated vertically to move thestop 89 into and out of sheet arresting position, and this movement issynchronized with the movement of the conveyor chains through theinterrelated drive.

Slidable in the slot 11 of the member 15 is a bar 84 formed of upper andlower sections which are pivoted together as at 85. The lower sectioncarries a plate 86 similar to the sheet arresting plate 89 on the bar19, and the upper section is equipped with a projecting roller 81 whichrides in a groove 88 of a cam member 89. The slot 11 is formed near itslower end with an inclined cam surface 99 which forces the lower portionof the bar 84 outwardly as shown in Fig. 4 when the bar is in loweredposition. The two sections of the bar 84 are connected by a coil spring9| which normally holds said sections in vertical alinement when thelower end of the bar is above the inclined cam surface 99, the springbeing slightly compressed when the lower portion of the bar is forcedoutwardly as in Fig. 4. This feature of the stitching machine is shownand claimed in Patent No. 1,874,671 and is adapted to hold theoverlapped portions of the blank in squared condition while thestitching is being performed, as fully set forth in said patent.

As before stated, the principal object of the present invention is toobtain increased production without causing the blanks to move toorapidly through the folding machine and without limiting the requiredperiod of arrestation of the folded blank in the stitching machine. Thisis accomplished by a novel cooperation between the lineal speed, flightspacing and flight positioning on the conveyors 4|, 60 and 65.

Assuming as before mentioned that the blanks ID are 24 wide, that is 24"in a longitudinal directionon the conveyors, they are conveyed one at atime by the flights 40 through the folding mechanism, and the folding isperformed while the blanks are being moved. The flights 40 are spaced34" from one another, and there are but two sets of said flights on theconveyor 4|. As a set of flights nears the end of the conveyor 4|, itmoves the folded blank III to a positionabove the intermediate conveyor60, as shown in Fig. 6. As soon as the flights 40 leave the trailingedge of the sheet the flights 63 on the conveyor 60 are in a position topick up said trailing edge and continue the movement of the sheet. Thelineal speed of the conveyor 60 is such that the flights 64 will be in aposition to pick up the next sheet as soon as the other set of flights40 on the conveyor 4| has finished moving said sheet. Due to the factthat the flights 63 and 64 are spaced 48" apart, whereas the flights 40are spaced 34 apart, the lineal speed of the conveyor 80 must thereforebe 48/34 greater than the lineal speed of the conveyor 4|. When theflights 63 on the conveyor 60 near the end of said conveyor, the sheetis thrown into the position shown at H) in Fig. 6 and against thearresting plate 80 which is timed to lower into arresting position atthis particular moment and just after the flights 69 on the conveyor 65have passed the arresting plate as shown in Fig. 6. Due to the fact thatthe blank I0 is 24 long and due to the factthat the spacing between theflights 69 and H is 48", the flights must move 24" before they engagethe trailing edge of the blank l0 which is being stitched. This allowsan ample interval of time for the arrestation, squaring and stitching ofthe folded blank. Just before the flights engage the trailing edge ofthe blank ID in the stitcher, the arresting plate 8|] and squaring plate86 are automatically withdrawn and the flights discharge the stitchedblank from the machine as a completed knock-down container. By the timethe next blank is moved into the stitcher the flights II have clearedthe arresting plate 80 and are in the position of the flights 69 in Fig.6, and the flights 10 have moved around to the position of the flights1|.

To further illustrate the principle of the invention and assuming thatthe machine is producing boxes at a speed of sixty per minute, or one asecond, which speed is mentioned only for purposes of illustration, theblanks will be moved through the folding machine at the rate of 34" persecond. Due to the increased lineal speed of the intermediate conveyor60, the blanks will be moved through the intermediate conveyor and intoposition in the stitcher at a speed of 48" per second. If therefore theflights II are 24" from the trailing edge of the blank ID in thestitcher, there will be 24/48 or one-half second available for thestitching operation. Thus the folding operation is accomplished at arelatively low speed, which is advantageous as the speed of movementthrough the folder is limited, and still there is more time availablefor stitching.

If the flight spacing were equal, that is 34" on all of the conveyors,and the speed of all of the conveyors were equal, then assuming that theblanks are still moving throughthe folder at the rate of 34" a second,they will also move through the intermediate conveyor at a rate of 34"per second, and if the spacing between the flights 'H and 69 on thestitcher conveyor were 34" and the blanks 24" wide, there would only be10" between the flight 1| and the trailing edge of the blank III in thestitcher. This would therefore allow only 10/34 of a second for thestitching operation as compared to onehalf a second with the presentinvention. Inasmuch as 10/34 of a second is not sufficient time for thestitching, it is therefore necessary with equal flight spacing to slowdown all of the conveyors to provide approximately one-half second forthe stitching, and as a result the speed of production is curtailed overthe speed of the present invention. I

From the above it is apparent that the present invention will increaseproduction without causing the sheets to be moved too rapidly throughthe folding unit and without limiting the time for the period ofarrestation in the stitching device. In other words the stopping periodin the stitcher is the minimum which is consistent with properstitching, and the speed of the folding conveyors is somewhat slowerthan would ordinarily be employed for the same period of arrestation inthe stitcher, and the intermediate conveyor operates at such speed andin such a manner as to properly transfer the sheets from the folder tothe stitcher.

It is to be understood that the flight spacings, relative speeds of theconveyors, and width of the blank as stated herein are by way ofillustration only and are not limitations. It is possible to have asomewhat different speed between the intermediate conveyor and thestitching conveyor, although the same speed is preferred. It is alsopossible to use means other than flights for moving and maintaining thespacing of the blanks. It is also to be understood that while thepresent invention has been shown and described as used in connectionwith a stitching machine, that it may also be employed in connectionwith other devices for securing the ends of the blanks together. such asmachines for taping or the like.

Various other changes and modifications may be made without departingfrom the spirit of the invention, and all of such changes arecontemplated as may come within the scope of the claims.

What I claim is:

1. In a box making machine having mechanism for folding portions of theblank into overlapped stitching position and having mechanism forstitching said overlapped portions, a first conveyor for moving theblanks through said folding mechanism, a second conveyor engageable withthe blanks after they have been folded for delivering the same tostitching position in the stitching mechanism, means for moving saidsecond conveyor at a higher lineal speed than said first conveyor, meanson said second conveyor providing greater spacing between blanks than onsaid first conveyor whereby said greater spacing affords an interval oftime for the stitching operation, and means for discharging the blanksfrom the stitching mechanism.

2. In a box making machine having mechanism for folding portions of theblank into overlapped stitching position and having mechanism fortemporarily arresting the movement of the folded blank and for stitchingthe overlapped portions thereof while the movement of the blank isarrested, a first conveyor for moving the blanks through said foldingmechanism, a second conveyor engageable with the blanks after they havebeen folded for delivering the same to stitching position in thearresting mechanism, means for moving said second conveyor at a higherlineal speed than said first conveyor, means on said second conveyorproviding greater spacing between blanks than on said first conveyorwhereby said greater spacingafiords an interval of time for thearrestation of the blank during the stitching operation, and means fordischarging the blanks from the stitching mechanism.

3. In a box making machine having mechanism for folding portions of theblank into overlapped stitching position and having mechanism forstitching said overlapped portions, a first conveyor for moving theblanksthrough said folding mechanism, a second conveyor engageable withthe blanks after they have been folded for delivering the same tostitching position in the stitching mechanism, means for moving saidsecond conveyor at a higher lineal speed than said first conveyor, meanson said second conveyor providing greater spacing between blanks than onsaid first conveyor whereby said greater spacing affords an interval oftime for the stitching operation, and a third conveyor for dischargingthe stitched blanks operating at the same lineal speed and providing thesame spacing between blanks as said second conveyor.

4. In a box making machine having mechanism for folding portions of theblank into overlapped stitching position and having mechanism forstitching said overlapped portions, a first chain conveyor for movingthe blanks through said folding mechanism having spaced flights thereon,a second chain conveyor engageable with the blanks after they have beenfolded for delivering the same to stitching position in the stitchingmechanism, means for moving said second chain conveyor at a higherlineal speed than said first conveyor, flights on said second conveyorproviding greater spacing between blanks than the flights on said firstconveyor whereby said greater spacing affords an interval of time forthe stitching operation, and means for discharging the blanks from thestitching mechanism.

5. In a box making machine having mechanism for folding portions of theblank into overlapped stitching position and having mechanism forstitching said overlapped portions, a first chain conveyor for movingthe blanks through said folding mechanism having spaced flights thereon,a second chain conveyor engageable with the blanks after they have beenfolded for delivering the same to stitching position in the stitchingmechanism, means for moving said second chain conveyor at a higherlineal speed than said first conveyor, flights on said second conveyorproviding greater spacing between blanksthan the flights on said firstconveyor whereby said greater spacing affords an interval of time forthe stitching operation, and a third conveyor for discharging thestitched blanks operating at the same lineal speed as said secondconveyor and having flights thereon spaced the same distance apart asthe flights on said second conveyor.

6. In a box making machine having mechanism for folding portions of theblank into overs lapped stitching position and having mechanism forstitching said overlapped portions, a first conveyor for moving theblanks through said folding mechanism having spaced flights thereon, asecond conveyor engageable with the blanks after they have been foldedfor delivering the same to stitching positionin said stitchingmechanism, said second conveyor having flights thereon spaced a greaterdistance apart than the flights on said first conveyor, means fordriving said second conveyor at a higher lineal speed than said flrstconveyor proportionately to the difference in flight spacing, and athird conveyor having flights thereon for discharging the blanks fromsaid stitching mechanism, the position of the flights on said thirdconveyor being so related to the position of the flights on said secondconveyor that an interval of time is allowed for arrestation of theblank in the stitching mechanism.

7. In a box making machine having mechanism for folding portions of theblank into overlapped stitching position and having mechanism forstitching said overlapped portions, a first conveyor for moving theblanks through said folding mechanism having spaced flights thereon, asecond conveyor engageable with the blanks after they have been foldedfor delivering the same to stitching position in said stitchingmechanism, said second conveyor having flights thereon spaced a greaterdistance apart than the flights on said first conveyor, means fordriving said second conveyor at a higher lineal speed than said firstconveyor proportionately to the difference in flight spacing, and meansfor discharging the blank from said stitching mechanism, said meansbeing so timed with relation to the movement of the flights on saidsecond conveyor that an interval of time is allowed for arrestation ofthe blank in the stitching mechanism.

8. In a box making machine having mechanism for folding portions of theblank into overlapped stitching position and having mechanism forstitching said overlapped portions, a first conveyor for moving theblanks through said folding mechanism having spaced flights thereon, asecond conveyor engageable with the blanks after they have been foldedfor delivering the same to stitching position in said stitchingmechanism, said second conveyor having flights thereon spaced a greaterdistance apart than the flights on said first conveyor, means fordriving said second conveyor at a higher lineal speed than said firstconveyor proportionately to the difference in flight spacing, a thirdconveyor for discharging blanks from the stitching mechanism havingflights thereon spaced apart the same distance as the flights on saidsecond conveyor, and means for driving said third conveyor at the samelineal speed as said second conveyor, the position of the flights onsaid third conveyor being so related to the position of the flights onsaid second conveyor that an interval of time is allowed for arrestationof the blank in the stitching mechanism.

9. In a box making machine having mechanism for folding portions of theblank into overlapped stitching position and having mechanism forstitching said overlapped portions,a first conveyor for moving theblanks through said folding mechanism having spaced flights thereon, asecond conveyor engageable with the blanks after they have been foldedfor delivering the same to stitching position in said stitchingmechanism, said second conveyor having flights thereon spaced a greaterdistance apart than the flights on said first conveyor, means fordriving said second conveyor at a higher lineal speed than said firstconveyor proportionately to the difference in flight spacing, a thirdconveyor having flights thereon for discharging the blanks from saidstitching mechanism, the position of the flights on said third conveyorbeing so related' to the position of the flights on said second conveyorthat an interval of time is allowed for arrestation of the blank in thestitching mechanism, and means for automatically operating the stitchingmechanism during said interval of arrestation.

10. In a box making machine having mechanism for folding portions of theblank into overlapped stitching position and having mechanism forstitching said overlapped portions, 9. first conveyor for moving theblanks through said folding mechanism having spaced flights thereon, asecond conveyor engageable with the blanks after they have been foldedfor delivering the same to stitching position in said stitchingmechanism, said second conveyor having flights thereon spaced a greaterdistance apart than the flights on said first conveyor, means fordriving said second conveyor at a higher lineal speed than said firstconveyor proportionately to the difference in flight spacing, means fordischarging the blank from said stitching mechanism, said means being sotimed with relation to the movement of the flights on said secondconveyor that an interval of time is allowed for arrestation of theblank in the stitching mechanism, and means for automatically operatingthe stitching mechanism during said interval of arrestation.

11. In a box making machine having mechanism for folding portions of theblank into overlapped stitching position and having mechanism forstitching said overlapped portions, a first conveyor for moving theblanks through said fold- ,ing mechanism having spaced flights thereon,a

second conveyor engageable with the blanks after they have been foldedfor delivering the same to stitching position in said stitchingmechanism, said second conveyor having flights thereon spaced a greaterdistance apart than the flights on said first conveyor, means fordriving said second conveyor at a higher lineal speed than said firstconveyor proportionately to the difference in flight spacing, a thirdconveyor for discharging blanks from the stitching mechanism havingflights thereon spaced apart the same distance as the flights on saidsecond conveyor, means for driving said third conveyor at the samelineal speed as said second conveyor, the position of the flights onsaid third conveyor being so related to the position of the flights onsaid second conveyor that an interval of time is allowed for arrestaticnof the blank in the stitching mechanism, and means for automaticallyoperating the stitching mechanism during said interval of arrestation.

12. In a box making machine having mechanism for folding portions of theblank into over:- lapped stitching position and having mechanism forstitching said overlapped portions, 9. first conveyor for moving theblanks through said folding mechanism having spaced flights thereon, asecond conveyor engageable withthe blanks after they have been foldedfor delivering the same to stitching position in said stitchingmechanism, said second conveyor having flights thereon spaced a greaterdistance apart than the flights on said first conveyor, means fordriving said second conveyor at a higher lineal speed than said firstconveyor proportionately to the difference in flight spacing, meansforwardly of said second conveyor and operable in timed relationshiptherewithfor temporarily arresting the movement of the blank belowthestitching mechanism, and means for discharging the blank from saidstitching mechanism, said means. being so timed with relation to themovement of the flights on said second conveyor and with relation to theoperation of the arresting means as to operate only after said arrestingmeans has been withdrawn. I

13. In a box making machine having mechanism for folding portions of theblank into overlapped position for being secured together and havingmechanism for temporarily arresting the movement of the folded blank andfor securing the over-lapped portions thereof while the movement of theblank is arrested, means providing for a period of arrestation of theblank in the securing mechanism of predetermined duration, means forconveying blanks through the folding mechanism at a relatively slowspeed toprevent injury to the blanks during folding, which speed wouldnormally advance blanks too slowly for the period of arrestation in thesecuring mechanism, and other means for transferringblanks from thefolding mechanism to the securing mechanism operating at a suflicientlyhigher speed than the folding mechanism conveyor so that the blanks willbe fed in properly timed relationship with said period of arrestation inthe securing mechanism.

14. In a box making machine having mechanism for folding portions of theblank into overlapped position for being secured together and havingmechanism for temporarily arresting the movement of the folded blank andfor securing the over-lapped portions thereof while the movement of theblank is arrested, means providing fora period of arrestation of theblank in the securing mechanism of predetermined duration, means forconveying blanks through the folding mechanism at a relatively slowspeed to prevent injury to the blanks during folding. which speed wouldnormally advance blanks too slowly for the period of arrestation in thesecuring mechanism, means for transferring blanks from the foldingmechanism to the securing mechanism operating at a higher speed than thefolding mechanism conveyor, and means providing for greater spacing ofthe blanks on said transferring mechanism whereby the blanks areproperly fed from the folding mechanism to the securing mechanism andwhereby the travel of the blanks is properly synchronized with saidpredetermined period of arrestation of the securing mechanismnotwithstanding said relatively slow speed of the,

folding mechanism conveyor.

15. In a box making machine having mechanism for folding portions of theblank into overlapp d position for being secured together and havingmechanism for securing said over-lapped portions, a first conveyor formoving the blanks through said folding mechanism, a second conveyorengageable with the blanks after they have been folded for deliveringthe same to operative position in the securing mechanism, means formoving said second conveyor at higher lineal speed than said firstconveyor, means on said second conveyor providing greater spacingbetween blanks than on said first conveyor whereby said greater spacingaflords an interval of time for the securing operation, and means fordischarging the blanks from the securing mechanism.

16. In a box making machine having mechanism for folding portions of theblank into overlapped position for being secured together and havingmechanism for temporarily arresting the movement of the folded blank andfor securing the overlapped portions thereof while the movement of theblank is arrested, a first conveyor for moving the blanks through saidfolding mechanism, a second conveyor engageable with the blanks afterthey have been folded for delivering the same to operative position inthe securing mechanism, means for moving said second conveyor at ahigher lineal speed than said first conveyor, means on said secondconveyor providing greater spacing between blanks than on said firstconveyor whereby said greater spacing affords an interval of time forthe arrestation of the blank during the securing operation, and meansfor discharging the blanks from the securing mechanism.

17. In a box making machine having mechanism for folding portions of theblank into overlapped position for being secured together and havingmechanism for securing said over-lapped portions, a first conveyor formoving the blanks through said folding mechanism, a second conveyorengageable with the blanks after they have been folded for deliveringthe same to operative position in the securing mechanism, means formoving said second conveyor at higher lineal speed than said firstconveyor, means whereby the blanks on said. second conveyor are spacedapart a greater distance than the blanks on said first conveyor toafford a greater interval of time fgathe securing operation, and meansfor disrging the blanks from the securing mechanism.

18. In a box making machine having mechathe securing mechanism duringnism for folding portions of the blank into overlapped position forbeing secured together and having mechanism for securing saidover-lapped portions, a first conveyor for moving the blanks throughsaid folding mechanism in definite spaced relation, a second conveyorengageable with the blanks after they have been folded for deliveringthe same to operative position in said securing. mechanism, meanswhereby the blanks on said second conveyor are spaced apart a greaterdistance than the blanks on said first conveyor, means for driving saidsecond conveyor at a higher lineal speed than said first conveyorproportionately to the difference in spacing between blanks, and a thirdconveyor having discharging means for discharging the blanks from saidsecuring mechanism, the position of the discharging means on said thirdconveyor being so related to the spacing between blanks on said secondconveyor that an interval of time is allowed for arrestation of theblank in the securing mechanism.

19. In a box making machine having mechanism for folding portions of theblank into overlapped position for being secured together and havingmechanism for securing said over-lapped portions, a first conveyor formoving the blanks through said folding mechanism in definite spacedrelation,'a second conveyor engageable with the blanks after they havebeen folded for delivering the same to operative position in saidsecuring mechanism, means whereby the blanks on said second conveyor arespaced apart a greater distance than the blanks on said first conveyor,means for driving said second conveyor at a higher lineal speed thansaid finit conveyor proportionately to the difference in spacing betweenblanks, a third conveyor having discharging means for discharging theblanks from said securing mechanism, the position of the dischargingmeans on said third conveyor being so related to the spacing betweenblanks on said second conveyor that an interval of time is allowed forarrestation of the blank in the securing mechanism, and means forautomatically operating said interval of arrestation.

CLAYTON KEMP.

